@mixin flex($type) {
  @include display-flex;
  @include flex-direction($type)
}
@mixin padding-left($left) {
  padding-left: $left;
  @include box-sizing(border-box);
}
@mixin padding-top($top) {
  padding-top: $top;
  @include box-sizing(border-box);
}
@mixin padding-right($right) {
  padding-right: $right;
  @include box-sizing(border-box);
}
@mixin padding-bottom($bottom) {
  padding-bottom: $bottom;
  @include box-sizing(border-box);
}
@mixin padding2($v, $h) {
  padding: $v $h;
  @include box-sizing(border-box);
}
@mixin padding4($t, $r, $b, $l) {
  padding: $t $r $b $l;
  @include box-sizing(border-box);
}
